import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'


Vue.use(VueRouter)

const routes = [
  {path: '/', redirect:'/login'},
  {path:'/login', component: Login},
  {path:'/home', component: Home}
]

const router = new VueRouter({
  routes
})
//挂载路由导航守卫
router.beforeEach((to, from, next) => {
  //to 将要访问的路径
  //from 代表从那个路径跳转而来
  //next 是一个函数 表示放行

  if(to.path === '/login')return next();
  //获取token
  const tokenStr = sessionStorage.getItem('token');
  if(!tokenStr) return next('/login');
  next();

})

export default router
